From 8f92bf7e5891ec22b84b7969f24e6918ee5a9e38 Mon Sep 17 00:00:00 2001 From: Michael S. Tsirkin <mst@redhat.com> Date: Wed, 14 May 2014 08:24:25 +0200 Subject: [PATCH 01/10] vmstate: reduce code duplication Message-id: <1400055633-6261-1-git-send-email-mst@redhat.com> Patchwork-id: 58848 O-Subject: [PATCH qemu-kvm RHEL7.0.z 1/5] vmstate: reduce code duplication Bugzilla: 1095706 RH-Acked-by: Juan Quintela <quintela@redhat.com> RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com> RH-Acked-by: Marcel Apfelbaum <marcel.a@redhat.com> RH-Acked-by: Dr. David Alan Gilbert (git) <dgilbert@redhat.com> move size offset and number of elements math out to functions, to reduce code duplication. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> (cherry picked from commit 35fc1f71899fd42323bd8f33da18f0211e0d2727) --- savevm.c | 100 +++++++++++++++++++++++++++++++++------------------------------ 1 file changed, 52 insertions(+), 48 deletions(-) Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com> --- savevm.c | 100 ++++++++++++++++++++++++++++++++----------------------------- 1 files changed, 52 insertions(+), 48 deletions(-) diff --git a/savevm.c b/savevm.c index 5d1b563..94512dd 100644 --- a/savevm.c +++ b/savevm.c @@ -1675,6 +1675,50 @@ static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, void *opaque); +static int vmstate_n_elems(void *opaque, VMStateField *field) +{ + int n_elems = 1; + + if (field->flags & VMS_ARRAY) { + n_elems = field->num; + } else if (field->flags & VMS_VARRAY_INT32) { + n_elems = *(int32_t *)(opaque+field->num_offset); + } else if (field->flags & VMS_VARRAY_UINT32) { + n_elems = *(uint32_t *)(opaque+field->num_offset); + } else if (field->flags & VMS_VARRAY_UINT16) { + n_elems = *(uint16_t *)(opaque+field->num_offset); + } else if (field->flags & VMS_VARRAY_UINT8) { + n_elems = *(uint8_t *)(opaque+field->num_offset); + } + + return n_elems; +} + +static int vmstate_size(void *opaque, VMStateField *field) +{ + int size = field->size; + + if (field->flags & VMS_VBUFFER) { + size = *(int32_t *)(opaque+field->size_offset); + if (field->flags & VMS_MULTIPLY) { + size *= field->size; + } + } + + return size; +} + +static void *vmstate_base_addr(void *opaque, VMStateField *field) +{ + void *base_addr = opaque + field->offset; + + if (field->flags & VMS_POINTER) { + base_addr = *(void **)base_addr + field->start; + } + + return base_addr; +} + int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, void *opaque, int version_id) { @@ -1700,30 +1744,10 @@ int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, field->field_exists(opaque, version_id)) || (!field->field_exists && field->version_id <= version_id)) { - void *base_addr = opaque + field->offset; - int i, n_elems = 1; - int size = field->size; - - if (field->flags & VMS_VBUFFER) { - size = *(int32_t *)(opaque+field->size_offset); - if (field->flags & VMS_MULTIPLY) { - size *= field->size; - } - } - if (field->flags & VMS_ARRAY) { - n_elems = field->num; - } else if (field->flags & VMS_VARRAY_INT32) { - n_elems = *(int32_t *)(opaque+field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT32) { - n_elems = *(uint32_t *)(opaque+field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT16) { - n_elems = *(uint16_t *)(opaque+field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT8) { - n_elems = *(uint8_t *)(opaque+field->num_offset); - } - if (field->flags & VMS_POINTER) { - base_addr = *(void **)base_addr + field->start; - } + void *base_addr = vmstate_base_addr(opaque, field); + int i, n_elems = vmstate_n_elems(opaque, field); + int size = vmstate_size(opaque, field); + for (i = 0; i < n_elems; i++) { void *addr = base_addr + size * i; @@ -1768,30 +1792,10 @@ void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, while(field->name) { if (!field->field_exists || field->field_exists(opaque, vmsd->version_id)) { - void *base_addr = opaque + field->offset; - int i, n_elems = 1; - int size = field->size; - - if (field->flags & VMS_VBUFFER) { - size = *(int32_t *)(opaque+field->size_offset); - if (field->flags & VMS_MULTIPLY) { - size *= field->size; - } - } - if (field->flags & VMS_ARRAY) { - n_elems = field->num; - } else if (field->flags & VMS_VARRAY_INT32) { - n_elems = *(int32_t *)(opaque+field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT32) { - n_elems = *(uint32_t *)(opaque+field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT16) { - n_elems = *(uint16_t *)(opaque+field->num_offset); - } else if (field->flags & VMS_VARRAY_UINT8) { - n_elems = *(uint8_t *)(opaque+field->num_offset); - } - if (field->flags & VMS_POINTER) { - base_addr = *(void **)base_addr + field->start; - } + void *base_addr = vmstate_base_addr(opaque, field); + int i, n_elems = vmstate_n_elems(opaque, field); + int size = vmstate_size(opaque, field); + for (i = 0; i < n_elems; i++) { void *addr = base_addr + size * i; -- 1.7.1